<template>
    <div class="login-container">
      <div class="login-form" v-if="!isLoggedIn">
        <h2 style="color: aliceblue;">登录</h2>
        <el-form ref="form" :model="form" :rules="rules" label-width="80px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="form.username" placeholder="请输入用户名"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input type="password" v-model="form.password" show-password placeholder="请输入密码"></el-input>
          </el-form-item>
          <el-form-item>
            <el-button v-hasPermi="['loginForm:loginForm:query']" type="primary" @click="submitForm('form')">立即登录</el-button>
          </el-form-item>
        </el-form>
        <p class="register-link">
          <el-checkbox v-model="isAgreed" style="margin-top: 10px;" value="Online activities" name="type">
            同意
          </el-checkbox>
          没有账号？
          <a href="#/ZhuCei" :class="{ disabled: !isAgreed }" @click.prevent="handleRegisterClick">
            立即注册
          </a>
        </p>
      </div>
      <div class="user-info" v-else>
        <h2 style="color: aliceblue;">欢迎，{{ username }}</h2>
        <el-button type="primary" @click="logout">注销</el-button>
      </div>
    </div>
  </template>
  <script>
  import axios from 'axios';
  
  export default {
    data() {
      return {
        form: {
          username: '',
          password: '',
          isAgreed: false,
        },
        rules: {
          username: [
            { required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 3, max: 20, message: '长度在 3 到 20 个字符', trigger: 'blur' }
          ],
          password: [
            { required: true, message: '请输入密码', trigger: 'blur' },
            { min: 6, max: 20, message: '长度在 6 到 20 个字符', trigger: 'blur' }
          ]
        },
        isLoggedIn: false,
        username: ''
      };
    },
    methods: {
      handleRegisterClick() {
        if (this.isAgreed) {
          this.$router.push('/ZhuCei');
        } else {
          alert('请先同意条款');
        }
      },
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            const loginData = {
              username: this.form.username,
              password: this.form.password
            };
  
            axios.post('http://localhost:8090/user/login', loginData)
              .then(response => {
                console.log("data=", response);
                if (response.data.code === 200) {
                  // 登录成功，保存 token 和用户名
                  localStorage.setItem('token', response.data.token);
                  localStorage.setItem('username', this.form.username);
                  this.isLoggedIn = true;
                  this.username = this.form.username;
                 this.$router.push('/ProductList');
                } else {
                  console.error('登录失败:', response.data.message);
                  alert('登录失败，请检查用户名和密码');
                }
              })
              .catch(error => {
                console.error('请求失败:', error);
                alert('请求失败，请稍后再试');
              });
          } else {
            console.log('表单验证失败！');
            return false;
          }
        });
      },
      logout() {
        // 注销操作，清除 token 和用户名
        localStorage.removeItem('token');
        localStorage.removeItem('username');
        this.isLoggedIn = false;
        this.username = '';
        this.$router.push('/ZhuCei');
      }
    },
    created() {
      // 检查是否已经登录
      const token = localStorage.getItem('token');
      const username = localStorage.getItem('username');
      if (token &&username) {
        this.isLoggedIn = true;
        this.username = username;
      }
    }
  };
  </script>
  <style scoped>
  .login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 93.5vh;
   
  }
  
  .login-form {
    background: rgba(144, 97, 118, 0.167);
    padding: 20px;
    border-radius: 9px;
    box-shadow: 0 5px 7px rgba(246, 247, 247, 0.852);
    width: 300px;
  }
  
  .user-info {
    background: rgba(144, 97, 118, 0.167);
    padding: 20px;
    border-radius: 9px;
    box-shadow: 0 5px 7px rgba(246, 247, 247, 0.852);
    width: 300px;
    text-align: center;
  }
  
  h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
  }
  
  .register-link {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: #666;
  }
  
  .register-link a {
    color: #409eff;
    text-decoration: none;
  }
  
  .register-link a:hover {
    text-decoration: underline;
  }
  </style>
  